Tom Cruise got into a dance-off at the wedding of Oracle billionaire Larry Ellison’s son, David, to actress Sandy Modic in Palm Springs last weekend. Cruise and wife Katie Holmes — along with their daughter Suri, 5 — were among guests at the wedding for the Skydance Productions founder, who’s the executive producer of Cruise’s “Mission: Impossible — Ghost Protocol.” David met Sandy on the set of 2010’s “Hole in One.” A spy told us, “Suri went to bed before the reception, and then Tom had a dance-off with a few of the guys in the wedding party.” We pray Cruise recreated his wicked Les Grossman “Tropic Thunder” dance moves.